can be constructed as

4 triples
GPTKB property

Random triples
Subject Object
gptkb:real_projective_plane sphere with antipodal points identified
gptkb:hyperelliptic_surfaces quotient of a product of two elliptic curves by a finite group
gptkb:rational_elliptic_surface blow-up of the projective plane at 9 points
gptkb:Real_projective_plane sphere with antipodal points identified